The new Arm64 Teams app has been quietly announced by Microsoft senior product manager Bill Weidenborner in a LinkedIn post. Microsoft announced the Arm64 version of Teams was "coming soon" last month at its Ignite 2020 conference.
Windows on Arm, of course, natively supports Arm apps, including Arm64 versions like the Teams app. But until now it only supported 32-bit Intel (x86) apps via emulation, while 64-bit only apps couldn't run on Windows on Arm devices due to the lack of x64 emulation.
Microsoft is also working to ensure that existing apps will work with Windows 10 and Microsoft 365 Apps on Arm 64 via the company's App Assure program.
Additionally, it's working with teams at Acer, HP, Lenovo, Samsung and Surface to bring Windows 10 on Arm innovations and products to its partners' customers.
The Surface Pro X with the new SQ2 processor co-designed by Microsoft and Qualcomm is available for $1,499 for the Windows on Arm Home edition. It comes with 16GB or RAM and 256GB of storage. The Surface Pro X same specs and Windows on Arm Pro costs $1,599.